/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:50:53,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:50:53,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:50:53,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:50:53,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:50:53,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:50:53,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:50:53,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:50:53,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:50:53,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:50:53,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:50:53,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:50:53,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:50:53,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:50:53,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:50:53,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:50:53,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:50:53,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:50:53,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:50:53,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:50:53,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:50:53,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:50:53,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:50:53,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:50:53,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:50:53,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:50:53,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:50:53,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:50:53,236 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 11:50:53,251 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:50:53,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:50:53,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:50:53,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:50:53,252 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:50:53,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:50:53,253 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:50:53,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:50:53,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:50:53,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:50:53,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:50:53,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:50:53,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:50:53,254 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:50:53,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:50:53,255 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:50:53,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:50:53,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:50:53,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:50:53,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:50:53,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:50:53,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:50:53,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:50:53,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:50:53,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:50:53,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:50:53,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:50:53,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:50:53,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:50:53,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:50:53,533 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:50:53,552 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:50:53,555 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:50:53,556 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:50:53,559 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:50:53,560 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2020-07-20 11:50:53,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/395f30ff9/cc182ec9118840e9a0abac4b8cb02ee3/FLAG8ecdab249 [2020-07-20 11:50:54,119 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:50:54,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2020-07-20 11:50:54,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/395f30ff9/cc182ec9118840e9a0abac4b8cb02ee3/FLAG8ecdab249 [2020-07-20 11:50:54,509 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/395f30ff9/cc182ec9118840e9a0abac4b8cb02ee3 [2020-07-20 11:50:54,520 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:50:54,524 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:50:54,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:50:54,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:50:54,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:50:54,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:50:54" (1/1) ... [2020-07-20 11:50:54,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74e6fc25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:50:54, skipping insertion in model container [2020-07-20 11:50:54,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:50:54" (1/1) ... [2020-07-20 11:50:54,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:50:54,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:50:54,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:50:54,876 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:50:55,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:50:55,062 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:50:55,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:50:55 WrapperNode [2020-07-20 11:50:55,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:50:55,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:50:55,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:50:55,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:50:55,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:50:55" (1/1) ... [2020-07-20 11:50:55,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:50:55" (1/1) ... [2020-07-20 11:50:55,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:50:55" (1/1) ... [2020-07-20 11:50:55,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:50:55" (1/1) ... [2020-07-20 11:50:55,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:50:55" (1/1) ... [2020-07-20 11:50:55,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:50:55" (1/1) ... [2020-07-20 11:50:55,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:50:55" (1/1) ... [2020-07-20 11:50:55,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:50:55,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:50:55,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:50:55,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:50:55,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:50:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:50:55,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:50:55,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:50:55,168 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 11:50:55,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:50:55,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:50:55,168 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 11:50:55,168 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 11:50:55,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 11:50:55,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:50:55,169 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:50:55,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:50:55,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:50:55,638 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:50:55,638 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 11:50:55,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:50:55 BoogieIcfgContainer [2020-07-20 11:50:55,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:50:55,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:50:55,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:50:55,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:50:55,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:50:54" (1/3) ... [2020-07-20 11:50:55,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0e63b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:50:55, skipping insertion in model container [2020-07-20 11:50:55,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:50:55" (2/3) ... [2020-07-20 11:50:55,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0e63b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:50:55, skipping insertion in model container [2020-07-20 11:50:55,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:50:55" (3/3) ... [2020-07-20 11:50:55,652 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i.v+cfa-reducer.c [2020-07-20 11:50:55,662 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:50:55,670 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 18 error locations. [2020-07-20 11:50:55,683 INFO L251 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2020-07-20 11:50:55,706 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:50:55,706 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:50:55,706 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:50:55,706 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:50:55,707 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:50:55,707 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:50:55,707 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:50:55,707 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:50:55,730 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-07-20 11:50:55,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 11:50:55,736 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:50:55,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:50:55,738 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:50:55,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:50:55,742 INFO L82 PathProgramCache]: Analyzing trace with hash -2019463306, now seen corresponding path program 1 times [2020-07-20 11:50:55,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:50:55,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621558903] [2020-07-20 11:50:55,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:50:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:50:55,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:50:55,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:50:55,878 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:50:55,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:50:55,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:50:55,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621558903] [2020-07-20 11:50:55,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:50:55,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:50:55,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718791562] [2020-07-20 11:50:55,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:50:55,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:50:55,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:50:55,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:50:55,931 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 3 states. [2020-07-20 11:50:55,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:50:55,971 INFO L93 Difference]: Finished difference Result 93 states and 129 transitions. [2020-07-20 11:50:55,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:50:55,973 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-20 11:50:55,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:50:55,983 INFO L225 Difference]: With dead ends: 93 [2020-07-20 11:50:55,984 INFO L226 Difference]: Without dead ends: 80 [2020-07-20 11:50:55,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:50:56,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-07-20 11:50:56,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-07-20 11:50:56,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-20 11:50:56,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2020-07-20 11:50:56,030 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 19 [2020-07-20 11:50:56,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:50:56,031 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2020-07-20 11:50:56,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:50:56,031 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2020-07-20 11:50:56,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 11:50:56,032 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:50:56,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:50:56,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:50:56,246 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:50:56,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:50:56,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1821150056, now seen corresponding path program 1 times [2020-07-20 11:50:56,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:50:56,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359497196] [2020-07-20 11:50:56,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:50:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:50:56,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:50:56,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:50:56,360 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:50:56,365 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:50:56,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:50:56,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:50:56,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359497196] [2020-07-20 11:50:56,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:50:56,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 11:50:56,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778384059] [2020-07-20 11:50:56,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:50:56,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:50:56,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:50:56,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:50:56,390 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand 6 states. [2020-07-20 11:50:56,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:50:56,532 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2020-07-20 11:50:56,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 11:50:56,532 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-07-20 11:50:56,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:50:56,534 INFO L225 Difference]: With dead ends: 80 [2020-07-20 11:50:56,534 INFO L226 Difference]: Without dead ends: 78 [2020-07-20 11:50:56,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:50:56,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-20 11:50:56,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-07-20 11:50:56,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-07-20 11:50:56,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2020-07-20 11:50:56,546 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 20 [2020-07-20 11:50:56,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:50:56,547 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2020-07-20 11:50:56,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:50:56,547 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2020-07-20 11:50:56,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 11:50:56,548 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:50:56,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:50:56,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:50:56,765 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:50:56,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:50:56,766 INFO L82 PathProgramCache]: Analyzing trace with hash 2073610827, now seen corresponding path program 1 times [2020-07-20 11:50:56,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:50:56,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570845155] [2020-07-20 11:50:56,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:50:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:50:56,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:50:56,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:50:56,840 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:50:56,843 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:50:56,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:50:56,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:50:56,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570845155] [2020-07-20 11:50:56,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:50:56,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:50:56,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205283454] [2020-07-20 11:50:56,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:50:56,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:50:56,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:50:56,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:50:56,858 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand 4 states. [2020-07-20 11:50:57,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:50:57,006 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2020-07-20 11:50:57,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:50:57,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-20 11:50:57,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:50:57,009 INFO L225 Difference]: With dead ends: 101 [2020-07-20 11:50:57,009 INFO L226 Difference]: Without dead ends: 99 [2020-07-20 11:50:57,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:50:57,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-07-20 11:50:57,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 76. [2020-07-20 11:50:57,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-20 11:50:57,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2020-07-20 11:50:57,029 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 22 [2020-07-20 11:50:57,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:50:57,030 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2020-07-20 11:50:57,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:50:57,031 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2020-07-20 11:50:57,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 11:50:57,032 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:50:57,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:50:57,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:50:57,246 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:50:57,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:50:57,247 INFO L82 PathProgramCache]: Analyzing trace with hash -142570686, now seen corresponding path program 1 times [2020-07-20 11:50:57,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:50:57,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777780646] [2020-07-20 11:50:57,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:50:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:50:57,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:50:57,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:50:57,304 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:50:57,306 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:50:57,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:50:57,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:50:57,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777780646] [2020-07-20 11:50:57,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:50:57,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:50:57,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295458863] [2020-07-20 11:50:57,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:50:57,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:50:57,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:50:57,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:50:57,324 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 5 states. [2020-07-20 11:50:57,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:50:57,407 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2020-07-20 11:50:57,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:50:57,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-07-20 11:50:57,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:50:57,409 INFO L225 Difference]: With dead ends: 76 [2020-07-20 11:50:57,409 INFO L226 Difference]: Without dead ends: 74 [2020-07-20 11:50:57,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:50:57,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-20 11:50:57,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-07-20 11:50:57,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-07-20 11:50:57,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2020-07-20 11:50:57,417 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 23 [2020-07-20 11:50:57,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:50:57,418 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2020-07-20 11:50:57,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:50:57,418 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-07-20 11:50:57,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 11:50:57,419 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:50:57,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:50:57,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:50:57,633 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:50:57,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:50:57,634 INFO L82 PathProgramCache]: Analyzing trace with hash 402497124, now seen corresponding path program 1 times [2020-07-20 11:50:57,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:50:57,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124020169] [2020-07-20 11:50:57,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:50:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:50:57,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:50:57,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:50:57,688 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:50:57,690 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:50:57,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:50:57,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:50:57,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124020169] [2020-07-20 11:50:57,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:50:57,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:50:57,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198919657] [2020-07-20 11:50:57,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:50:57,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:50:57,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:50:57,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:50:57,707 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 4 states. [2020-07-20 11:50:57,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:50:57,849 INFO L93 Difference]: Finished difference Result 158 states and 166 transitions. [2020-07-20 11:50:57,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:50:57,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-07-20 11:50:57,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:50:57,851 INFO L225 Difference]: With dead ends: 158 [2020-07-20 11:50:57,854 INFO L226 Difference]: Without dead ends: 156 [2020-07-20 11:50:57,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:50:57,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-07-20 11:50:57,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 77. [2020-07-20 11:50:57,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-20 11:50:57,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-07-20 11:50:57,874 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 26 [2020-07-20 11:50:57,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:50:57,875 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-07-20 11:50:57,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:50:57,875 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-07-20 11:50:57,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 11:50:57,878 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:50:57,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:50:58,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:50:58,079 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:50:58,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:50:58,080 INFO L82 PathProgramCache]: Analyzing trace with hash 406230933, now seen corresponding path program 1 times [2020-07-20 11:50:58,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:50:58,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901412451] [2020-07-20 11:50:58,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:50:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:50:58,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:50:58,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:50:58,144 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:50:58,148 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:50:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:50:58,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:50:58,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901412451] [2020-07-20 11:50:58,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:50:58,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:50:58,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069894294] [2020-07-20 11:50:58,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:50:58,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:50:58,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:50:58,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:50:58,166 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 4 states. [2020-07-20 11:50:58,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:50:58,258 INFO L93 Difference]: Finished difference Result 124 states and 130 transitions. [2020-07-20 11:50:58,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:50:58,258 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-07-20 11:50:58,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:50:58,260 INFO L225 Difference]: With dead ends: 124 [2020-07-20 11:50:58,260 INFO L226 Difference]: Without dead ends: 122 [2020-07-20 11:50:58,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:50:58,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-20 11:50:58,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 79. [2020-07-20 11:50:58,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-20 11:50:58,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2020-07-20 11:50:58,269 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 26 [2020-07-20 11:50:58,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:50:58,269 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2020-07-20 11:50:58,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:50:58,269 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2020-07-20 11:50:58,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 11:50:58,270 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:50:58,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:50:58,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:50:58,475 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:50:58,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:50:58,476 INFO L82 PathProgramCache]: Analyzing trace with hash -407487796, now seen corresponding path program 1 times [2020-07-20 11:50:58,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:50:58,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696443371] [2020-07-20 11:50:58,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:50:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:50:58,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:50:58,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:50:58,545 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:50:58,548 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:50:58,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:50:58,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:50:58,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696443371] [2020-07-20 11:50:58,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:50:58,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:50:58,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833308162] [2020-07-20 11:50:58,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:50:58,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:50:58,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:50:58,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:50:58,560 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 5 states. [2020-07-20 11:50:58,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:50:58,669 INFO L93 Difference]: Finished difference Result 121 states and 127 transitions. [2020-07-20 11:50:58,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:50:58,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-20 11:50:58,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:50:58,671 INFO L225 Difference]: With dead ends: 121 [2020-07-20 11:50:58,671 INFO L226 Difference]: Without dead ends: 119 [2020-07-20 11:50:58,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:50:58,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-07-20 11:50:58,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 77. [2020-07-20 11:50:58,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-20 11:50:58,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-07-20 11:50:58,679 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 27 [2020-07-20 11:50:58,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:50:58,680 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-07-20 11:50:58,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:50:58,680 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-07-20 11:50:58,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 11:50:58,681 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:50:58,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:50:58,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:50:58,896 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:50:58,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:50:58,897 INFO L82 PathProgramCache]: Analyzing trace with hash -291739827, now seen corresponding path program 1 times [2020-07-20 11:50:58,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:50:58,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481824825] [2020-07-20 11:50:58,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:50:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:50:58,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:50:58,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:50:58,948 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:50:58,951 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:50:58,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:50:58,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:50:58,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481824825] [2020-07-20 11:50:58,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:50:58,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:50:58,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844818162] [2020-07-20 11:50:58,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:50:58,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:50:58,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:50:58,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:50:58,965 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 5 states. [2020-07-20 11:50:59,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:50:59,057 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-07-20 11:50:59,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:50:59,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-20 11:50:59,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:50:59,059 INFO L225 Difference]: With dead ends: 77 [2020-07-20 11:50:59,059 INFO L226 Difference]: Without dead ends: 75 [2020-07-20 11:50:59,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:50:59,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-07-20 11:50:59,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-07-20 11:50:59,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-20 11:50:59,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-07-20 11:50:59,069 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 27 [2020-07-20 11:50:59,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:50:59,070 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-07-20 11:50:59,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:50:59,071 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-07-20 11:50:59,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 11:50:59,073 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:50:59,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:50:59,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:50:59,275 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:50:59,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:50:59,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1188998893, now seen corresponding path program 1 times [2020-07-20 11:50:59,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:50:59,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829943421] [2020-07-20 11:50:59,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:50:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:50:59,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 11:50:59,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:50:59,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:50:59,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:50:59,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829943421] [2020-07-20 11:50:59,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:50:59,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:50:59,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010318242] [2020-07-20 11:50:59,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:50:59,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:50:59,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:50:59,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:50:59,326 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 3 states. [2020-07-20 11:50:59,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:50:59,390 INFO L93 Difference]: Finished difference Result 115 states and 121 transitions. [2020-07-20 11:50:59,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:50:59,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-07-20 11:50:59,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:50:59,394 INFO L225 Difference]: With dead ends: 115 [2020-07-20 11:50:59,394 INFO L226 Difference]: Without dead ends: 75 [2020-07-20 11:50:59,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:50:59,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-07-20 11:50:59,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-07-20 11:50:59,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-20 11:50:59,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-07-20 11:50:59,411 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 29 [2020-07-20 11:50:59,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:50:59,412 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-07-20 11:50:59,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:50:59,412 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-07-20 11:50:59,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 11:50:59,413 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:50:59,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:50:59,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:50:59,616 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:50:59,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:50:59,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1640998784, now seen corresponding path program 1 times [2020-07-20 11:50:59,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:50:59,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960452696] [2020-07-20 11:50:59,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:50:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:50:59,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:50:59,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:50:59,676 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:50:59,679 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:50:59,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:50:59,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:50:59,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960452696] [2020-07-20 11:50:59,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:50:59,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:50:59,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398873609] [2020-07-20 11:50:59,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:50:59,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:50:59,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:50:59,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:50:59,693 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 5 states. [2020-07-20 11:50:59,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:50:59,773 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2020-07-20 11:50:59,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 11:50:59,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-20 11:50:59,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:50:59,774 INFO L225 Difference]: With dead ends: 76 [2020-07-20 11:50:59,775 INFO L226 Difference]: Without dead ends: 74 [2020-07-20 11:50:59,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:50:59,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-20 11:50:59,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-07-20 11:50:59,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-07-20 11:50:59,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2020-07-20 11:50:59,781 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 30 [2020-07-20 11:50:59,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:50:59,782 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2020-07-20 11:50:59,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:50:59,782 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2020-07-20 11:50:59,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 11:50:59,783 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:50:59,783 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:50:59,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:50:59,992 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:50:59,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:50:59,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1892106755, now seen corresponding path program 1 times [2020-07-20 11:50:59,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:50:59,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608395634] [2020-07-20 11:50:59,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:00,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 11:51:00,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:00,065 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:00,067 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:00,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 11:51:00,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:51:00,081 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:51:00,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 11:51:00,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608395634] [2020-07-20 11:51:00,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:51:00,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-07-20 11:51:00,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198740837] [2020-07-20 11:51:00,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:51:00,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:00,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:51:00,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:51:00,118 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 5 states. [2020-07-20 11:51:00,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:00,211 INFO L93 Difference]: Finished difference Result 111 states and 115 transitions. [2020-07-20 11:51:00,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 11:51:00,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-20 11:51:00,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:00,213 INFO L225 Difference]: With dead ends: 111 [2020-07-20 11:51:00,213 INFO L226 Difference]: Without dead ends: 109 [2020-07-20 11:51:00,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:51:00,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-20 11:51:00,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 70. [2020-07-20 11:51:00,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-20 11:51:00,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2020-07-20 11:51:00,219 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 30 [2020-07-20 11:51:00,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:00,219 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2020-07-20 11:51:00,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:51:00,220 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2020-07-20 11:51:00,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 11:51:00,220 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:00,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:00,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:00,433 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:00,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:00,434 INFO L82 PathProgramCache]: Analyzing trace with hash 668648404, now seen corresponding path program 1 times [2020-07-20 11:51:00,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:00,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002939899] [2020-07-20 11:51:00,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:00,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:51:00,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:00,474 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:00,475 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:00,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:51:00,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:00,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002939899] [2020-07-20 11:51:00,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:00,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:51:00,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67727700] [2020-07-20 11:51:00,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:51:00,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:00,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:51:00,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:51:00,484 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand 5 states. [2020-07-20 11:51:00,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:00,557 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2020-07-20 11:51:00,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:51:00,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-07-20 11:51:00,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:00,562 INFO L225 Difference]: With dead ends: 70 [2020-07-20 11:51:00,562 INFO L226 Difference]: Without dead ends: 68 [2020-07-20 11:51:00,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:51:00,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-20 11:51:00,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-07-20 11:51:00,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-20 11:51:00,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2020-07-20 11:51:00,567 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 31 [2020-07-20 11:51:00,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:00,568 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2020-07-20 11:51:00,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:51:00,568 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2020-07-20 11:51:00,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 11:51:00,569 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:00,569 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:00,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:00,780 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:00,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:00,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1470784207, now seen corresponding path program 1 times [2020-07-20 11:51:00,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:00,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648709988] [2020-07-20 11:51:00,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:00,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 11:51:00,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:00,844 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:00,847 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:00,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 11:51:00,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:51:00,860 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:51:00,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 11:51:00,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648709988] [2020-07-20 11:51:00,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:51:00,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-07-20 11:51:00,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618410685] [2020-07-20 11:51:00,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:51:00,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:00,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:51:00,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:51:00,898 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand 5 states. [2020-07-20 11:51:00,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:00,974 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2020-07-20 11:51:00,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 11:51:00,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-07-20 11:51:00,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:00,976 INFO L225 Difference]: With dead ends: 69 [2020-07-20 11:51:00,976 INFO L226 Difference]: Without dead ends: 67 [2020-07-20 11:51:00,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:51:00,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-20 11:51:00,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2020-07-20 11:51:00,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-20 11:51:00,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2020-07-20 11:51:00,981 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 31 [2020-07-20 11:51:00,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:00,981 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2020-07-20 11:51:00,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:51:00,982 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2020-07-20 11:51:00,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-20 11:51:00,982 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:00,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:01,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:01,194 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:01,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:01,194 INFO L82 PathProgramCache]: Analyzing trace with hash -350608983, now seen corresponding path program 1 times [2020-07-20 11:51:01,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:01,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084829942] [2020-07-20 11:51:01,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:01,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 11:51:01,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:01,247 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:01,248 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:01,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:51:01,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:01,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084829942] [2020-07-20 11:51:01,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:01,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:51:01,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511653739] [2020-07-20 11:51:01,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:51:01,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:01,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:51:01,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:51:01,258 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand 5 states. [2020-07-20 11:51:01,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:01,313 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2020-07-20 11:51:01,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 11:51:01,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-07-20 11:51:01,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:01,315 INFO L225 Difference]: With dead ends: 63 [2020-07-20 11:51:01,315 INFO L226 Difference]: Without dead ends: 61 [2020-07-20 11:51:01,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:51:01,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-20 11:51:01,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-07-20 11:51:01,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-20 11:51:01,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2020-07-20 11:51:01,319 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 34 [2020-07-20 11:51:01,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:01,319 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2020-07-20 11:51:01,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:51:01,320 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2020-07-20 11:51:01,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-20 11:51:01,320 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:01,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:01,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:01,529 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:01,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:01,530 INFO L82 PathProgramCache]: Analyzing trace with hash 2016026591, now seen corresponding path program 1 times [2020-07-20 11:51:01,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:01,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150383548] [2020-07-20 11:51:01,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:01,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 11:51:01,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:01,599 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:01,600 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:01,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:51:01,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:01,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150383548] [2020-07-20 11:51:01,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:01,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 11:51:01,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461178336] [2020-07-20 11:51:01,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 11:51:01,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:01,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 11:51:01,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:51:01,615 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 7 states. [2020-07-20 11:51:01,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:01,723 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2020-07-20 11:51:01,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:51:01,723 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-07-20 11:51:01,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:01,724 INFO L225 Difference]: With dead ends: 71 [2020-07-20 11:51:01,724 INFO L226 Difference]: Without dead ends: 69 [2020-07-20 11:51:01,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-07-20 11:51:01,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-20 11:51:01,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 58. [2020-07-20 11:51:01,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-07-20 11:51:01,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-07-20 11:51:01,729 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 35 [2020-07-20 11:51:01,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:01,729 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-07-20 11:51:01,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 11:51:01,729 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-07-20 11:51:01,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 11:51:01,730 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:01,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:01,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:01,939 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:01,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:01,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1371399406, now seen corresponding path program 1 times [2020-07-20 11:51:01,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:01,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449776310] [2020-07-20 11:51:01,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:01,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 11:51:01,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:01,999 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:02,002 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:02,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:51:02,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:02,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449776310] [2020-07-20 11:51:02,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:02,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:51:02,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510119055] [2020-07-20 11:51:02,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:51:02,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:02,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:51:02,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:51:02,013 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 5 states. [2020-07-20 11:51:02,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:02,091 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-07-20 11:51:02,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 11:51:02,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-07-20 11:51:02,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:02,093 INFO L225 Difference]: With dead ends: 60 [2020-07-20 11:51:02,093 INFO L226 Difference]: Without dead ends: 58 [2020-07-20 11:51:02,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:51:02,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-20 11:51:02,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-07-20 11:51:02,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-20 11:51:02,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-07-20 11:51:02,097 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 38 [2020-07-20 11:51:02,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:02,098 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-07-20 11:51:02,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:51:02,098 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-07-20 11:51:02,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-07-20 11:51:02,099 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:02,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:02,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:02,300 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:02,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:02,300 INFO L82 PathProgramCache]: Analyzing trace with hash 436294569, now seen corresponding path program 1 times [2020-07-20 11:51:02,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:02,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701502533] [2020-07-20 11:51:02,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:02,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 11:51:02,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:02,371 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:02,372 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:02,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:51:02,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:02,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701502533] [2020-07-20 11:51:02,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:02,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 11:51:02,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618669998] [2020-07-20 11:51:02,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 11:51:02,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:02,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 11:51:02,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:51:02,384 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 7 states. [2020-07-20 11:51:02,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:02,490 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2020-07-20 11:51:02,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:51:02,490 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-07-20 11:51:02,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:02,491 INFO L225 Difference]: With dead ends: 70 [2020-07-20 11:51:02,491 INFO L226 Difference]: Without dead ends: 68 [2020-07-20 11:51:02,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-07-20 11:51:02,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-20 11:51:02,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 54. [2020-07-20 11:51:02,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-20 11:51:02,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-07-20 11:51:02,495 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 39 [2020-07-20 11:51:02,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:02,495 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-07-20 11:51:02,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 11:51:02,496 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-07-20 11:51:02,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-20 11:51:02,496 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:02,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:02,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:02,706 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:02,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:02,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1627614740, now seen corresponding path program 1 times [2020-07-20 11:51:02,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:02,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357567531] [2020-07-20 11:51:02,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:02,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:51:02,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:02,767 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:02,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:51:02,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:02,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357567531] [2020-07-20 11:51:02,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:02,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:51:02,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127381396] [2020-07-20 11:51:02,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:51:02,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:02,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:51:02,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:51:02,778 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 4 states. [2020-07-20 11:51:02,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:02,814 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2020-07-20 11:51:02,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:51:02,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-07-20 11:51:02,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:02,815 INFO L225 Difference]: With dead ends: 65 [2020-07-20 11:51:02,815 INFO L226 Difference]: Without dead ends: 63 [2020-07-20 11:51:02,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:51:02,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-20 11:51:02,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2020-07-20 11:51:02,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-07-20 11:51:02,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-07-20 11:51:02,820 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 41 [2020-07-20 11:51:02,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:02,820 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-07-20 11:51:02,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:51:02,820 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-07-20 11:51:02,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-20 11:51:02,821 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:02,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:03,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:03,030 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:03,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:03,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1083553822, now seen corresponding path program 1 times [2020-07-20 11:51:03,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:03,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462059379] [2020-07-20 11:51:03,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:03,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:51:03,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:03,084 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:03,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:51:03,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:03,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462059379] [2020-07-20 11:51:03,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:03,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:51:03,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389416006] [2020-07-20 11:51:03,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:51:03,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:03,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:51:03,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:51:03,095 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 5 states. [2020-07-20 11:51:03,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:03,125 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2020-07-20 11:51:03,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:51:03,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-07-20 11:51:03,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:03,126 INFO L225 Difference]: With dead ends: 59 [2020-07-20 11:51:03,126 INFO L226 Difference]: Without dead ends: 57 [2020-07-20 11:51:03,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:51:03,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-20 11:51:03,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-07-20 11:51:03,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-20 11:51:03,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-07-20 11:51:03,131 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 42 [2020-07-20 11:51:03,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:03,131 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-07-20 11:51:03,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:51:03,131 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-07-20 11:51:03,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-20 11:51:03,132 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:03,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:03,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:03,333 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:03,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:03,334 INFO L82 PathProgramCache]: Analyzing trace with hash -769566670, now seen corresponding path program 1 times [2020-07-20 11:51:03,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:03,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127517242] [2020-07-20 11:51:03,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:03,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 11:51:03,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:03,393 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:03,395 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:03,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:51:03,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:03,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127517242] [2020-07-20 11:51:03,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:03,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:51:03,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84706594] [2020-07-20 11:51:03,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:51:03,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:03,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:51:03,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:51:03,410 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 5 states. [2020-07-20 11:51:03,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:03,489 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2020-07-20 11:51:03,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 11:51:03,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-07-20 11:51:03,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:03,490 INFO L225 Difference]: With dead ends: 59 [2020-07-20 11:51:03,491 INFO L226 Difference]: Without dead ends: 57 [2020-07-20 11:51:03,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:51:03,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-20 11:51:03,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2020-07-20 11:51:03,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-20 11:51:03,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-07-20 11:51:03,495 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 43 [2020-07-20 11:51:03,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:03,496 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-07-20 11:51:03,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:51:03,496 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-07-20 11:51:03,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-20 11:51:03,496 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:03,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:03,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:03,698 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:03,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:03,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1913240228, now seen corresponding path program 1 times [2020-07-20 11:51:03,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:03,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804475467] [2020-07-20 11:51:03,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:03,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 11:51:03,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:03,766 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:03,767 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:03,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:51:03,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:03,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804475467] [2020-07-20 11:51:03,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:03,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 11:51:03,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441172838] [2020-07-20 11:51:03,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 11:51:03,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:03,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 11:51:03,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:51:03,778 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 7 states. [2020-07-20 11:51:03,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:03,893 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-07-20 11:51:03,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:51:03,893 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-07-20 11:51:03,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:03,894 INFO L225 Difference]: With dead ends: 68 [2020-07-20 11:51:03,894 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:51:03,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-07-20 11:51:03,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:51:03,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:51:03,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:51:03,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:51:03,896 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-07-20 11:51:03,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:03,896 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:51:03,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 11:51:03,896 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:51:03,896 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:51:04,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:04,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:51:04,326 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 29 [2020-07-20 11:51:04,469 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 82 [2020-07-20 11:51:04,889 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2020-07-20 11:51:05,000 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 21 [2020-07-20 11:51:05,341 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2020-07-20 11:51:05,346 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:51:05,346 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:51:05,346 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:51:05,346 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:51:05,346 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 11:51:05,346 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:51:05,346 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:51:05,346 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-20 11:51:05,347 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-20 11:51:05,347 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-07-20 11:51:05,347 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-20 11:51:05,347 INFO L268 CegarLoopResult]: For program point L192(lines 192 352) no Hoare annotation was computed. [2020-07-20 11:51:05,347 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 123) no Hoare annotation was computed. [2020-07-20 11:51:05,347 INFO L268 CegarLoopResult]: For program point L382(lines 382 391) no Hoare annotation was computed. [2020-07-20 11:51:05,347 INFO L268 CegarLoopResult]: For program point L93(lines 93 410) no Hoare annotation was computed. [2020-07-20 11:51:05,347 INFO L268 CegarLoopResult]: For program point L27(lines 27 435) no Hoare annotation was computed. [2020-07-20 11:51:05,347 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 437) no Hoare annotation was computed. [2020-07-20 11:51:05,347 INFO L268 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-07-20 11:51:05,347 INFO L264 CegarLoopResult]: At program point L399(lines 129 400) the Hoare annotation is: (and (<= 1 main_~__VERIFIER_assert__cond~1) (<= 0 main_~main__scheme~0) (<= (+ main_~main__cp~0 1) main_~main__urilen~0) (<= 1 main_~__VERIFIER_assert__cond~3) (not (= 0 main_~main__scheme~0)) (<= 1 main_~main__cp~0) (<= 1 main_~__VERIFIER_assert__cond~2) (<= 1 main_~__VERIFIER_assert__cond~0)) [2020-07-20 11:51:05,348 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 253) no Hoare annotation was computed. [2020-07-20 11:51:05,348 INFO L268 CegarLoopResult]: For program point L102(lines 102 409) no Hoare annotation was computed. [2020-07-20 11:51:05,348 INFO L268 CegarLoopResult]: For program point L69(lines 69 414) no Hoare annotation was computed. [2020-07-20 11:51:05,348 INFO L264 CegarLoopResult]: At program point L325(lines 260 326) the Hoare annotation is: (let ((.cse0 (+ main_~main__cp~0 1))) (and (<= 2 main_~main__cp~0) (<= .cse0 main_~main__urilen~0) (<= 0 main_~main__c~0) (not (= .cse0 main_~main__urilen~0)) (let ((.cse1 (<= 0 main_~main__scheme~0)) (.cse2 (<= 1 main_~__VERIFIER_assert__cond~4)) (.cse3 (<= 1 main_~__VERIFIER_assert__cond~3)) (.cse4 (<= 1 main_~__VERIFIER_assert__cond~0)) (.cse5 (<= 1 main_~__VERIFIER_assert__cond~5)) (.cse6 (<= 1 main_~__VERIFIER_assert__cond~1)) (.cse7 (<= 1 main_~__VERIFIER_assert__cond~6)) (.cse8 (<= 1 main_~__VERIFIER_assert__cond~10)) (.cse9 (<= 1 main_~__VERIFIER_assert__cond~8)) (.cse10 (<= 1 main_~__VERIFIER_assert__cond~7)) (.cse11 (<= 1 main_~__VERIFIER_assert__cond~2)) (.cse12 (<= 1 main_~__VERIFIER_assert__cond~9)) (.cse13 (<= 1 main_~__VERIFIER_assert__cond~11))) (or (and .cse1 (< (+ main_~main__c~0 1) main_~main__tokenlen~0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse1 .cse2 .cse3 (<= 1 main_~__VERIFIER_assert__cond~12) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13))) (not (= 0 main_~main__scheme~0)))) [2020-07-20 11:51:05,348 INFO L268 CegarLoopResult]: For program point L292(lines 292 316) no Hoare annotation was computed. [2020-07-20 11:51:05,349 INFO L268 CegarLoopResult]: For program point L160(lines 160 357) no Hoare annotation was computed. [2020-07-20 11:51:05,349 INFO L268 CegarLoopResult]: For program point L61(lines 61 420) no Hoare annotation was computed. [2020-07-20 11:51:05,349 INFO L268 CegarLoopResult]: For program point L251(lines 251 327) no Hoare annotation was computed. [2020-07-20 11:51:05,349 INFO L268 CegarLoopResult]: For program point L185(lines 185 353) no Hoare annotation was computed. [2020-07-20 11:51:05,349 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-07-20 11:51:05,349 INFO L264 CegarLoopResult]: At program point L408(lines 102 409) the Hoare annotation is: (<= 1 main_~__VERIFIER_assert__cond~0) [2020-07-20 11:51:05,349 INFO L268 CegarLoopResult]: For program point L210(lines 210 344) no Hoare annotation was computed. [2020-07-20 11:51:05,349 INFO L268 CegarLoopResult]: For program point L111(line 111) no Hoare annotation was computed. [2020-07-20 11:51:05,349 INFO L268 CegarLoopResult]: For program point L45(lines 45 432) no Hoare annotation was computed. [2020-07-20 11:51:05,349 INFO L268 CegarLoopResult]: For program point L268(lines 268 320) no Hoare annotation was computed. [2020-07-20 11:51:05,350 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 294) no Hoare annotation was computed. [2020-07-20 11:51:05,350 INFO L268 CegarLoopResult]: For program point L202(lines 202 351) no Hoare annotation was computed. [2020-07-20 11:51:05,350 INFO L268 CegarLoopResult]: For program point L260(lines 260 326) no Hoare annotation was computed. [2020-07-20 11:51:05,350 INFO L268 CegarLoopResult]: For program point L384(line 384) no Hoare annotation was computed. [2020-07-20 11:51:05,350 INFO L268 CegarLoopResult]: For program point L95(line 95) no Hoare annotation was computed. [2020-07-20 11:51:05,350 INFO L268 CegarLoopResult]: For program point L153(lines 153 358) no Hoare annotation was computed. [2020-07-20 11:51:05,350 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 155) no Hoare annotation was computed. [2020-07-20 11:51:05,350 INFO L268 CegarLoopResult]: For program point L21(lines 21 436) no Hoare annotation was computed. [2020-07-20 11:51:05,350 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 437) no Hoare annotation was computed. [2020-07-20 11:51:05,350 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 282) no Hoare annotation was computed. [2020-07-20 11:51:05,350 INFO L268 CegarLoopResult]: For program point L294(line 294) no Hoare annotation was computed. [2020-07-20 11:51:05,351 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2020-07-20 11:51:05,351 INFO L268 CegarLoopResult]: For program point L63(lines 63 415) no Hoare annotation was computed. [2020-07-20 11:51:05,351 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 437) the Hoare annotation is: true [2020-07-20 11:51:05,351 INFO L268 CegarLoopResult]: For program point L253(line 253) no Hoare annotation was computed. [2020-07-20 11:51:05,351 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-20 11:51:05,351 INFO L268 CegarLoopResult]: For program point L121(lines 121 401) no Hoare annotation was computed. [2020-07-20 11:51:05,351 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-07-20 11:51:05,351 INFO L268 CegarLoopResult]: For program point L270(line 270) no Hoare annotation was computed. [2020-07-20 11:51:05,351 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 212) no Hoare annotation was computed. [2020-07-20 11:51:05,351 INFO L268 CegarLoopResult]: For program point L39(lines 39 433) no Hoare annotation was computed. [2020-07-20 11:51:05,351 INFO L268 CegarLoopResult]: For program point mainErr16ASSERT_VIOLATIONERROR_FUNCTION(line 372) no Hoare annotation was computed. [2020-07-20 11:51:05,351 INFO L268 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-07-20 11:51:05,351 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 187) no Hoare annotation was computed. [2020-07-20 11:51:05,351 INFO L268 CegarLoopResult]: For program point L370(lines 370 393) no Hoare annotation was computed. [2020-07-20 11:51:05,352 INFO L268 CegarLoopResult]: For program point L81(lines 81 412) no Hoare annotation was computed. [2020-07-20 11:51:05,352 INFO L268 CegarLoopResult]: For program point L304(lines 304 314) no Hoare annotation was computed. [2020-07-20 11:51:05,352 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 306) no Hoare annotation was computed. [2020-07-20 11:51:05,352 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 111) no Hoare annotation was computed. [2020-07-20 11:51:05,352 INFO L268 CegarLoopResult]: For program point L222(lines 222 342) no Hoare annotation was computed. [2020-07-20 11:51:05,352 INFO L268 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2020-07-20 11:51:05,352 INFO L268 CegarLoopResult]: For program point L57(lines 57 430) no Hoare annotation was computed. [2020-07-20 11:51:05,352 INFO L264 CegarLoopResult]: At program point L313(lines 228 342) the Hoare annotation is: (let ((.cse0 (+ main_~main__cp~0 1))) (and (<= 2 main_~main__cp~0) (<= .cse0 main_~main__urilen~0) (<= 0 main_~main__c~0) (not (= 0 main_~main__scheme~0)) (let ((.cse1 (<= 0 main_~main__scheme~0)) (.cse2 (<= 1 main_~__VERIFIER_assert__cond~4)) (.cse3 (<= 1 main_~__VERIFIER_assert__cond~3)) (.cse4 (<= 1 main_~__VERIFIER_assert__cond~0)) (.cse5 (<= 1 main_~__VERIFIER_assert__cond~5)) (.cse6 (<= 1 main_~__VERIFIER_assert__cond~1)) (.cse7 (<= 1 main_~__VERIFIER_assert__cond~6)) (.cse8 (<= 1 main_~__VERIFIER_assert__cond~8)) (.cse9 (<= 1 main_~main__cp~0)) (.cse10 (<= 1 main_~__VERIFIER_assert__cond~7)) (.cse11 (<= 1 main_~__VERIFIER_assert__cond~9)) (.cse12 (<= 1 main_~__VERIFIER_assert__cond~2))) (or (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (<= 1 main_~__VERIFIER_assert__cond~10) .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse1 (not (= .cse0 main_~main__urilen~0)) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12))))) [2020-07-20 11:51:05,352 INFO L268 CegarLoopResult]: For program point L280(lines 280 318) no Hoare annotation was computed. [2020-07-20 11:51:05,352 INFO L268 CegarLoopResult]: For program point L239(lines 239 329) no Hoare annotation was computed. [2020-07-20 11:51:05,352 INFO L268 CegarLoopResult]: For program point L173(lines 173 355) no Hoare annotation was computed. [2020-07-20 11:51:05,353 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 241) no Hoare annotation was computed. [2020-07-20 11:51:05,353 INFO L268 CegarLoopResult]: For program point L33(lines 33 434) no Hoare annotation was computed. [2020-07-20 11:51:05,353 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 95) no Hoare annotation was computed. [2020-07-20 11:51:05,353 INFO L268 CegarLoopResult]: For program point L372(line 372) no Hoare annotation was computed. [2020-07-20 11:51:05,353 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-07-20 11:51:05,353 INFO L268 CegarLoopResult]: For program point L306(line 306) no Hoare annotation was computed. [2020-07-20 11:51:05,353 INFO L268 CegarLoopResult]: For program point L141(lines 141 360) no Hoare annotation was computed. [2020-07-20 11:51:05,353 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 224) no Hoare annotation was computed. [2020-07-20 11:51:05,353 INFO L268 CegarLoopResult]: For program point L232(lines 232 336) no Hoare annotation was computed. [2020-07-20 11:51:05,353 INFO L268 CegarLoopResult]: For program point mainErr17ASSERT_VIOLATIONERROR_FUNCTION(line 384) no Hoare annotation was computed. [2020-07-20 11:51:05,353 INFO L268 CegarLoopResult]: For program point L133(lines 133 395) no Hoare annotation was computed. [2020-07-20 11:51:05,353 INFO L268 CegarLoopResult]: For program point L224(line 224) no Hoare annotation was computed. [2020-07-20 11:51:05,353 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 143) no Hoare annotation was computed. [2020-07-20 11:51:05,353 INFO L268 CegarLoopResult]: For program point L59(lines 59 425) no Hoare annotation was computed. [2020-07-20 11:51:05,354 INFO L268 CegarLoopResult]: For program point L282(line 282) no Hoare annotation was computed. [2020-07-20 11:51:05,354 INFO L268 CegarLoopResult]: For program point L51(lines 51 431) no Hoare annotation was computed. [2020-07-20 11:51:05,354 INFO L268 CegarLoopResult]: For program point L241(line 241) no Hoare annotation was computed. [2020-07-20 11:51:05,354 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 270) no Hoare annotation was computed. [2020-07-20 11:51:05,354 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-20 11:51:05,354 INFO L268 CegarLoopResult]: For program point L109(lines 109 403) no Hoare annotation was computed. [2020-07-20 11:51:05,354 INFO L264 CegarLoopResult]: At program point L390(lines 127 401) the Hoare annotation is: (and (<= 1 main_~__VERIFIER_assert__cond~1) (<= 0 main_~main__scheme~0) (<= (+ main_~main__cp~0 1) main_~main__urilen~0) (<= 1 main_~__VERIFIER_assert__cond~3) (<= 1 main_~main__cp~0) (not (= 0 main_~main__scheme~0)) (<= 1 main_~__VERIFIER_assert__cond~2) (<= 1 main_~__VERIFIER_assert__cond~0)) [2020-07-20 11:51:05,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:51:05 BoogieIcfgContainer [2020-07-20 11:51:05,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:51:05,379 INFO L168 Benchmark]: Toolchain (without parser) took 10857.08 ms. Allocated memory was 135.3 MB in the beginning and 297.3 MB in the end (delta: 162.0 MB). Free memory was 99.8 MB in the beginning and 176.9 MB in the end (delta: -77.2 MB). Peak memory consumption was 176.2 MB. Max. memory is 7.1 GB. [2020-07-20 11:51:05,379 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 135.3 MB. Free memory is still 118.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 11:51:05,380 INFO L168 Benchmark]: CACSL2BoogieTranslator took 538.23 ms. Allocated memory was 135.3 MB in the beginning and 198.2 MB in the end (delta: 62.9 MB). Free memory was 99.3 MB in the beginning and 175.3 MB in the end (delta: -76.0 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:51:05,380 INFO L168 Benchmark]: Boogie Preprocessor took 37.92 ms. Allocated memory is still 198.2 MB. Free memory was 175.3 MB in the beginning and 173.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:51:05,381 INFO L168 Benchmark]: RCFGBuilder took 542.25 ms. Allocated memory is still 198.2 MB. Free memory was 173.3 MB in the beginning and 146.0 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2020-07-20 11:51:05,382 INFO L168 Benchmark]: TraceAbstraction took 9731.91 ms. Allocated memory was 198.2 MB in the beginning and 297.3 MB in the end (delta: 99.1 MB). Free memory was 144.9 MB in the beginning and 176.9 MB in the end (delta: -32.0 MB). Peak memory consumption was 158.5 MB. Max. memory is 7.1 GB. [2020-07-20 11:51:05,384 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 135.3 MB. Free memory is still 118.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 538.23 ms. Allocated memory was 135.3 MB in the beginning and 198.2 MB in the end (delta: 62.9 MB). Free memory was 99.3 MB in the beginning and 175.3 MB in the end (delta: -76.0 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.92 ms. Allocated memory is still 198.2 MB. Free memory was 175.3 MB in the beginning and 173.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 542.25 ms. Allocated memory is still 198.2 MB. Free memory was 173.3 MB in the beginning and 146.0 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9731.91 ms. Allocated memory was 198.2 MB in the beginning and 297.3 MB in the end (delta: 99.1 MB). Free memory was 144.9 MB in the beginning and 176.9 MB in the end (delta: -32.0 MB). Peak memory consumption was 158.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 83]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 306]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 372]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 187]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 212]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 282]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 224]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 241]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 294]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 270]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 143]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 253]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 384]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 111]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 175]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 155]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 123]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 95]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: ((((((1 <= __VERIFIER_assert__cond && 0 <= main__scheme) && main__cp + 1 <= main__urilen) && 1 <= __VERIFIER_assert__cond) && 1 <= main__cp) && !(0 == main__scheme)) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond - InvariantResult [Line: 102]: Loop Invariant Derived loop invariant: 1 <= __VERIFIER_assert__cond - InvariantResult [Line: 228]: Loop Invariant Derived loop invariant: (((2 <= main__cp && main__cp + 1 <= main__urilen) && 0 <= main__c) && !(0 == main__scheme)) && (((((((((((((0 <= main__scheme && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= main__cp) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) || ((((((((((((0 <= main__scheme && !(main__cp + 1 == main__urilen)) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= main__cp) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond)) - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: ((((((1 <= __VERIFIER_assert__cond && 0 <= main__scheme) && main__cp + 1 <= main__urilen) && 1 <= __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= main__cp) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond - InvariantResult [Line: 260]: Loop Invariant Derived loop invariant: ((((2 <= main__cp && main__cp + 1 <= main__urilen) && 0 <= main__c) && !(main__cp + 1 == main__urilen)) && ((((((((((((((0 <= main__scheme && main__c + 1 < main__tokenlen) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) || (((((((((((((0 <= main__scheme && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond))) && !(0 == main__scheme) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 91 locations, 18 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.3s, OverallIterations: 21, TraceHistogramMax: 2, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1204 SDtfs, 2109 SDslu, 1278 SDs, 0 SdLazy, 935 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 734 GetRequests, 623 SyntacticMatches, 13 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 21 MinimizatonAttempts, 287 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 16 NumberOfFragments, 274 HoareAnnotationTreeSize, 9 FomulaSimplifications, 1724887 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 9 FomulaSimplificationsInter, 27050 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 657 NumberOfCodeBlocks, 657 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 695 ConstructedInterpolants, 0 QuantifiedInterpolants, 64050 SizeOfPredicates, 94 NumberOfNonLiveVariables, 2222 ConjunctsInSsa, 123 ConjunctsInUnsatCore, 23 InterpolantComputations, 19 PerfectInterpolantSequences, 4/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...